Help me finish designing my 440 build. 1973 Scamp

I'd go smaller on the cam. I have a pump gas 512 in my car with a 246 hyd roller and it is borderline too big for the street. If I was building that engine I used a Holley Sniper rather than a carb and I'd use a Holley Hyperspark distributor. That will give you a very nice setup that works like a modern engine. You'll need to put a new gas tank in with an internal high pressure pump but those are off the shelf items these days. I just finished an article for Hot Rod on this subject, take a look if you're interested: Holley HyperSpark: Install and Tune - Hot Rod Network